Door-lock.



H. L. SPEIOHBR.

Patented Jan. 20, 1914.

INYENTOR UNITED stra'rss arena. carton.

HERMAN L. SPEICHER, OF NEW YORK, N. Y., ASSIGNOR TO RELIANCE BALL BEARING DOOR HANGER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

DOOR-LOCK.

Specification of Letters Patent.

Patented Jan. 20. 1914.

Application filed June 24, 1918. Serial No. 775,812.

To all whom it may concern:

Be it known that I, HERMAN L. SPEICHER, a citizen of the United States, residing on Larramore avenue, Jamaica, in the county of Queens, in the city of New York, in the State of New York, have invented certain new and useful Improvements in Door- Locks, of which the followin is a specification, reference being bad to the accompanying drawings, forming a part hereof.

This invention relates to door locks designed with reference to their use on sliding elevator doors, and more particularly sliding elevator doors mounted on movable carriers adapted to slide on fixed tracks. In doors of this general character it is usual to provide a latch lock operatively mounted on the carrier itself. This latch lock must, of course, have a suitable connection to permit the convenient operation of the latch by the operator. This connection, however, between the carrier and the door precludes the possibility of removing easily the door from the carrier or from moving the door with re s t to the carrier as, for instance, when he door is hingedly or slidably carried on the hangers.

It is the principal object of this invention to improve the construction of door locks used under conditions analogous to those above outlined by providing a connection between the latch lock on the carrier and the operating handle on the door, so that this connection may be broken readily with respect to the ban or and the parts of the connection as readi y reunited when the door is returned to its normal position.

In accordance with the invention a lock of the utmost simplicity and cheapness of manufacture is produced and the particular im rovements referred to above are such as will admit of the ready application of the lock to doors of any character and the easy manipulation thereof by unskilled operators.

The invention will e more particularly described with reference to the accompanying drawings in which- Figure 1 is a fragmentary view in front elevation of a sliding elevator door mounted on a carrier and provided with the improved lock, and relatively stationary door. Fig. 2 is a fragmentary detail view of the improved lock showing particularly the provision for the breaking of the connection between the operators handle and the latch itself. Fig.

3 is a fragmentary detail view of the operators handle the same being indicated as mounted on a door. Fig. 4 is a fragmentary view in plan of the latch proper showing the same engaged with the usual cooperating bracket mounted on the door jamb. Fig. 5 is a sectional view taken on the plane indicated by the line 5--5 of Fig. 3 and looking in the direction of the arrows. Fig. 6 is a view in detail of the cooperating parts of the coupling formed in the connecting rod of the door lock and showing the two disengaged. Fig, 7 is a view similar to Fig. 6 but showing a somewhat modified coupling.

While the improved lock is illustrated herein as applied to a single sliding elevator door, as this description proceeds it will appear that the lock is not to be so limited in its application, but will be equally useful when employed in connection with variable speed doors as well as other types now in general use.

In Fig. 1 the entrance to the elevator shaft is shown as being closed by a relatively stationary door a hinged, as at a, to the door jamb b, and a single sliding door 0 supported through hangers c from a car rier d movable, as usual, on a track e extending between the jambs b, b, of the doorway. On the proper jamb 5, adjacent the up )er edge thereo is fastened a suitable brac ket f having a nose f adapted to be en aged by a latch g mounted on the carrier (E and by which the elevator door or doors may be secured in closed osition. The operating or connecting rod etween the latch g and the operators handle g is constructed in accordance with the present invention of two axially alined members or rods 9 and 9''. One of these rods 57 is mounted on the slidmg door 0 adjacent the outer edge thereof, while the other rod g of the connection is mounted on the carrier (1 and has fixedly secured thereto the latch g. The lower rod g is normally clutched to the upper rod g as by means of suitable cooperating coupling members carried on the upper end of the lower r0 and the lower end of the upper rod respectively. The engagement of the coupling members 9 is normally assured by reason of a suitable sprin h w ich may be operatively connected wit the lower rod 7 so as to move the latter upwardly to an extent hmited only by either its engagement with the upper rod 9 or the engagement of a collar 9 on the lower end of the lower rod with the guide bracket 0 therefor.

From the description thus far given it will be evident that the operator may rock the latch 9 against the action of its torsional retainin spring 9' so as to disengage the latch from t is nose f of the bracket f on the door jamb b and permit the door 0 to be slid to open position. When the door a is in 0 en position it will be evident that only hal of the shaft entrance is free to be used. It often becomes desirable to open the entire shaft entrance to permit the unloading of unusually bulky articles. Hitherto sliding doors of the general character herein illustrated when provided with locks mounted on the carriers, could not be moved to an angular position with respect to the carriers even though the doors were hingedly su ported by their hangers, by reason of t e rigid connection between tie carriers and the doors constituted by the operating rod for the lock. The resent invention elimi nates this inconvenience so that when the door 0 is slid to its open position it may then be swung about the hinge connection 0 by which it is su ported on the supporting bar 0 carried by t 1e hangers c to 0 en fully the entrance to the elevator sha t. For instance, the operator need only remove the pin 0 by winch the door 0 is held in aline ment with the supporting bar 0, and then draw downwardly the lower rod 9 against the action of the sparing h, thus disengagin the coupling mem er 9* of the lower roc from the corresponding coupling member on the upper rod g". The result of this manipulation is that the lower rod 9 remains supported by the door while the upper rod 9 as an independent member remains supported by the carrier d. From this explanation it will be understood that the door 0 is free to be swung about its hinge conmotion 0 to an angular position w1th res ect to the carrier d, and open wide the s raft entrance, the relatively stationary door bein free to swing open on its hinges a as will e evident.

If desired, a flange 9 may be formed on the collar g carried adjacent the lower end of the rod to engage with the lower face of the brac ret 0 and hold the lower rod in retracted position against the action of the spring h as long as may be desired. When tie door is returned to its normal position and the pin a restored, the o erator may release the flange g from tlie engagement with the bracket 0 and permit the spring h to move the lower rod upwardly until the coupling members g are again in secure engagement.

In Fig. 7, the upper rod 9 is shown as having its lower end beveled, as at 9, while the cou ling member g" mounted on the upper on of the lower rod 9 is formed interiorly with a corresponding beveled recess 9 to receive the beveled end of the upper rod. .The advantage of this form of coupling resides primarily in the fact that when the lower rod stands in its normal position and the door 0 is returned to its normal position in alinement with its supporting bar 0 the engagement of the upper rod 9 with the relatively yielding coupling will be automatic and without special manipulation by the operator.

As indicated hereinbefore this invention is not limited in its scope to its application to doors of any particular character but may be used wherever it is desirable to employ a door lock which has its operative parts mounted respectively on two or more relatively movable parts.

I claim as my invention:

1. In combination with a carrier, a door mounted thereon and movable with respect thereto, an oscillating latch to control the movement of the carrier and door, a sectional rock shaft for the latch mounted on the carrier and the door, cooperating clutch members carried adjacent the roximate ends of the sections of the rock s iaft, said sections being relatively movable axially and adapted to disengage said clutch members solely by said axial movement and without moving the latch, and means to hold the clutch members in engagement normally.

2. In combination with a carrier, a hanger mounted thereon, a door hingedly secured to the hanger, an oscillating latch to control the movement of the carrier, hanger and door, a sectional rock shaft for the latch mounted in part on the carrier and in part on the door, and clutch members carried adjacent the proximate ends of the sections of the rock s aft, said sections being movable relatively in an axial direction immediately upon application of an axial stress to disengage the clutch members solely by said relative axial movement and without releasing the latch and permit the door to be swung about its hinged connection with the hanger.

3. In combination with a carrier, a track on which the carrier is slidable, a hanger mounted on the carrier, a door secured hingedly to the hanger, means to hold the door normally in alincment with the carrier, an oscillating latch to control the movement of the door, hanger and carrier, an operating rod for the latch composed. of two sections, one of the sections being mounted an the carrier and the other of the sections em han le carried by the last named section, clutch members secured adjacent the )roximate ends of the sections, and a sprm to press the sections toward each other axially and thus hold the clutch members in enga ement normally, the sections being movab e relatively in an axial direction immedimounted on the door, an operating.

ately upon application of an axial stress to disengage the clutch members solely by said relative axial movement and without releasing the latch and permit the door to be swung on its hinged connection with the hanger.

4. In combination with a carrier, a door mounted thereon and movable with respect thereto, a. latch to control the movement of the carrier and the door, an operating rod for the latch composed of two sections, one of the sections being mounted on the carrier and the other of the sections being mounted on the door, the proximate ends of said sections being formed to engage normally, the

proximate end of one section being tapered in cross section and the proximate end of the other section being recessed in cross section correspondingly to receive said tapered end, and a spring to press the sections toward each other axially and hold the tapered end within the recess ieldingly, said sections being movable relatively 1n an axial direction to permit their disengagement solely by said relative axial movement and without releasing the latch, whereby the door may be moved freely with respect to the carrier.

This specification signed and witnessed this 23rd day of June, A. D. 1913.

HERMAN L. SPEICHER. Signed in the presence of E. M. TAYLOR, WonTHmo'roN CAMPBELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. WnehingtomD. 0." 

